A random sample of stipends of teaching assistants in economics is listed. Is there sufficient evidence at the a = 0.05 level to conclude that the average stipend differs from $15,000? The stipends listed (in dollars) are for the academic year. 14,000 18,000 12,000 13,419 14,000 11,981 14,356 13,185 17,604 12,283 15,000 16,338

Mr. walker gave his class the function f(x) = (x + 3)(x + 5). four students made a claim about the function. each student’s claim is below. jeremiah: the y-intercept is at (15, 0). lindsay: the x-intercepts are at (–3, 0) and (5, 0). stephen: the vertex is at (–4, –1). alexis: the midpoint between the x-intercepts is at (4, 0). which student’s claim about the function is correct?

Find the value of x for which the lines are parallel.

What function has a range {yly< 5}? question on picture above^